JPH10290122A - Super-regenerative detector and system using the same - Google Patents

Abstract

(57) [Summary] [Purpose] The super-regenerative detection circuit 40 can be applied to reception in communication using a wide band. [Structure] An RF oscillation circuit 41 and an RF
Quenching oscillation circuit for intermittently oscillating the oscillation circuit 41
42 and LPF43. The LC series circuit 44 is connected to the output point A of the RF oscillation circuit 41. RF oscillation circuit 41
Based on the oscillating frequency and the oscillating frequency of the LC series circuit 44, detection over a wide range is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a super regenerating circuit and a system using the same.

[0002]

2. Description of the Related Art One of the detection systems for a modulated wave signal is a super-regenerative detection system.
No. 09 discloses this. This super regenerative detection circuit
The modulated wave signal is received, the signal is intermittently oscillated by the oscillation circuit in accordance with the received modulated wave signal, and the low frequency signal component of the intermittently oscillated signal is passed through the low pass filter. It detects a modulated wave signal. Although an LC resonator can be used for the oscillation circuit that constitutes the super-regenerative detection circuit, the LC resonator has a disadvantage that it is easily affected by temperature, humidity, and the like. For this purpose, a SAW resonator and a crystal oscillator are often used for the oscillation circuit. S
AW resonators, crystal oscillators, and the like have high Q characteristics, so that the reception band is narrowed and the selectivity is increased.

[0003] When a SAW resonator, a quartz oscillator or the like is used as an oscillation circuit, the Q characteristic is high, so that it is not suitable for reception in communication using a wide band represented by spread spectrum communication. On the other hand, it is conceivable to insert a damping resistor in the super-regeneration detection circuit so that communication using a wide band can be received. However, if a damping resistor is inserted into the super-recovery detection circuit, the sensitivity will decrease.

[0004]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a super-regenerative detection device having a wide reception bandwidth.

Another object of the present invention is to use various systems using such a super-regenerative detection device.

The super-regeneration detection apparatus according to the present invention comprises: an oscillation circuit that oscillates a signal having the same frequency as the carrier frequency of a modulated wave signal to be detected and outputs the signal from an output terminal; Oscillating circuit that intermittently oscillates the oscillating signal. The oscillation signal output from the oscillating circuit is input by the oscillation control by the quenching oscillation circuit, and the modulated wave signal is detected by passing a low-frequency signal component. A low-pass filter that outputs a detection signal, and an L connected to the output terminal of the oscillation circuit.
It is characterized by having a C series circuit.

According to the present invention, an LC series circuit is connected to the output terminal of the oscillation circuit. Therefore, the resonance frequency is a resonance frequency of the oscillation circuit and a frequency obtained by adding and subtracting the resonance frequency of the LC series circuit to the resonance frequency of the resonance circuit. For example, let the resonance frequency of the oscillation circuit be f0 and the L
Assuming that the resonance frequency of the C series circuit is f1, a modulated wave signal having a carrier frequency having any one of three frequencies of f0, (f0-f1) and (f0 + f1) is detected. be able to. The receiving bandwidth becomes wider.

When the above-mentioned super-reproduction detection circuit is used as a receiving device for a modulated signal, the receiving device includes a receiving device for receiving the modulated signal and supplying the received modulated signal to the oscillation circuit.

Further, the above-mentioned super regenerative detection device can be applied to a superheterodyne receiver. In this case, a receiving device that receives the modulated wave signal and outputs the received modulated wave signal, a local oscillation circuit that outputs a high-frequency signal having a frequency different from the frequency of the modulated wave signal, and the receiving device And outputs a modulated wave signal output from the local oscillator circuit and a high-frequency signal output from the local oscillation circuit, and outputs an intermediate signal having an intermediate frequency that is a difference between the frequency of the modulated wave signal and the frequency of the high-frequency signal And a mixer provided to the oscillation circuit.

The intermediate signal output from the mixer is input to the oscillation circuit, and the oscillation circuit will intermittently oscillate according to the modulated wave signal. The oscillation circuit oscillates a signal having the same frequency as the intermediate frequency.

Further, the above-mentioned reproduction detection device can be used in various systems.

As a first example, a garage / shutter opening / closing system including a transmitting device, a receiving device, and an opening / closing mechanism for opening / closing a garage shutter can be considered.

In this case, a command switch for receiving the shutter opening / closing command, an opening / closing command signal indicating the opening / closing command received by the command switch, and indicating that the user is a valid user who can open and close the shutter. A modulation circuit that modulates the ID signal and outputs a modulated wave signal, and a transmission circuit that transmits the modulated wave signal output from the modulation circuit.

The receiving apparatus includes the above-described super-reconstruction detection apparatus, a reception circuit that receives the modulated wave signal transmitted from the transmission circuit, and provides the modulated-wave signal to the super-reproduction detection apparatus. Signal analysis means for analyzing the command content of the open / close command signal and the content of the ID signal on the basis of the detection signal output from the low pass filter, and the I signal analyzed by the signal analysis means.
Control means is provided for controlling the opening / closing mechanism so as to perform an opening / closing operation according to the contents of the opening / closing command signal when the D signal is valid.

Since the receiving bandwidth of the receiving device is wide, the modulated wave signal can be reliably detected even if it changes over time, and the above analysis can be realized.

As a second example, it is conceivable to use a door opening / closing system including a transmitting device, a receiving device, and an opening / closing mechanism for opening / closing the door.

In this case, a command switch for receiving the door opening / closing command, an opening / closing command signal indicating the opening / closing command received by the command switch, and an ID indicating that the user is a valid user who can open and close the door are provided to the receiving device.
A modulation circuit that modulates the signal and outputs a modulated wave signal; and a transmission circuit that transmits the modulated wave signal output from the modulation circuit.

The receiving apparatus includes the above-described super-reconstruction detection apparatus, a reception circuit that receives the modulated wave signal transmitted from the transmission circuit, and provides the modulated-wave signal to the super-reproduction detection apparatus, and the super-regeneration detection apparatus. Signal analysis means for analyzing the command content of the open / close command signal and the content of the ID signal based on the detection signal output from the low pass filter;
And control means for controlling the opening / closing mechanism so as to perform an opening / closing operation according to the contents of the opening / closing command signal when the ID signal analyzed by the signal analyzing means is valid.

Also in this case, since the receiving bandwidth of the receiving device is wide, the modulated wave signal can be surely detected even if it changes over time.
The above analysis can be realized.

As a third example, an engine control system including a transmission device, a reception device, and an engine control device for controlling start and stop of an automobile engine is provided.
It can be used.

In this case, a command switch for receiving the start and stop commands of the engine to the transmitting device, a start / stop command signal representing the start / stop command received by the command switch, and a valid start / stop signal for the engine. A modulation circuit that modulates an ID signal indicating a user and outputs a modulated wave signal, and a transmission circuit that transmits the modulated wave signal output from the modulation circuit.

Further, the receiving apparatus receives the modulated wave signal transmitted from the transmitting circuit and supplies the modulated wave signal transmitted from the transmitting circuit to the super-regulated detecting apparatus, and a row included in the super-regulated detecting apparatus. A signal analysis means for analyzing the command content of the start / stop command signal and the content of the ID signal based on a detection signal output from the pass filter, and the ID signal analyzed by the signal analysis means is valid; Control means for controlling the engine control device so as to perform the control operation of the engine in accordance with the content of the start / stop command signal when the engine control device receives the command.

As a fourth example, it is conceivable to use the present invention in an automobile toy traveling control system including a transmitting device, a receiving device, and a traveling control mechanism for controlling traveling of the automobile toy.

In this case, the transmission device is a command switch for receiving the travel command of the car toy, a travel command signal representing the travel command received by the command switch, and a valid user who can control the travel of the car toy. A modulation circuit that modulates the ID signal indicating the above and outputs a modulated wave signal, and a transmission circuit that transmits the modulated wave signal output from the modulation circuit.

The receiving apparatus includes the above-described super-reconstruction detection apparatus, a reception circuit that receives the modulated wave signal transmitted from the transmission circuit, and provides the modulated-wave signal to the super-reproduction detection apparatus, and the super-regeneration detection apparatus. Signal analysis means for analyzing the command content of the travel command signal and the content of the ID signal based on the detection signal output from the low pass filter;
And control means for controlling the travel control mechanism such that when the ID signal analyzed by the signal analysis means is valid, the travel control mechanism performs a travel operation in accordance with the command content of the travel command signal.

Also in the third and fourth examples, since the receiving bandwidth of the receiving apparatus is wide, even if there is an aging, the modulated wave signal can be reliably detected and the above analysis can be realized.

As a fifth example, the super regenerative detection device can be applied to a spread spectrum receiving system. In this case, the modulated wave signal is subjected to spread spectrum modulation, the oscillation circuit inputs the spread spectrum modulated signal, and the low pass filter controls the spread spectrum modulation. The detected detection signal is output. And a circuit for performing spread spectrum demodulation on the detection signal output from the low pass filter and subjected to the spread spectrum modulation.

Since the receiving bandwidth is wide, even if the modulated wave signal is subjected to spread spectrum modulation, it can be received.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a circuit diagram of a receiving apparatus for a modulated wave signal according to this embodiment, and FIG. 2 is an RF oscillation circuit and a quenching oscillation circuit constituting a super-regeneration detecting circuit included in the receiving apparatus of FIG. FIG. 3 shows a signal waveform flowing through each circuit of the receiving apparatus shown in FIG.

The receiving apparatus shown in FIG. 1 has an AM-modulated modulated wave, an FM-modulated modulated wave and an ASK (Amplitude).
Shift keying) Any of the modulated waves can be received. Here, the case where the ASK-modulated modulated wave is transmitted to the receiving apparatus shown in FIG. 1 will be described.

A modulated wave ASK-modulated by a carrier having a frequency fr is transmitted from a transmitting device (not shown). This modulated wave is received by the receiving antenna 10 of the receiving device. The modulated wave received by the receiving antenna 10 is band-limited by the filter 20. The modulated wave whose band has been limited is amplified in the high-frequency amplifier circuit 30 and supplied to the super-regeneration detection circuit 40.

The super-regeneration detection circuit 40 includes an RF oscillation circuit 41 for oscillating a first signal having the same frequency fr as the carrier frequency fr of the modulated wave to be detected. The super-regeneration detection circuit 40 oscillates a second signal having a frequency higher than the carrier frequency fr of the modulated wave, and generates an RF oscillation circuit.
Quenching oscillator circuit to control oscillation in 41
42 are included.

An LC series circuit 44 is connected to the output point A of the RF oscillation circuit 41. The resonance frequency f1 of the LC series circuit 44 is expressed by the following equation, where L is the inductance and C is the capacitor. f1 = 1 / {2π (LC) ^1/2 } ... Equation 1

Here, first, the output point A of the RF oscillation circuit 41
Is not connected to the LC series circuit 44.

The modulated wave amplified in the high frequency amplifier circuit 30 is provided to the RF oscillation circuit 41. When the modulated wave is at the L level, oscillation in the quenching oscillation circuit 42 is limited, and the oscillation frequency is low. This result in a _1-point of the oscillation circuit signals, such as signal level when the modulation signal is H level of the modulated wave is increased gradually appears. This signal is high-frequency signal component when passing through the choke coil C ₁ is cut (a ₂ points). Signal passing through the choke coil C ₁ is only a low frequency signal given to the LPF (low pass filter) 43 passes. As a result, the modulated wave received by the receiving antenna 10 is detected and L
A detection signal is obtained from the PF 43.

In the receiving apparatus for a modulated wave signal shown in FIG.
As described above, the LC series circuit is connected to the output point A of the RF oscillation circuit 41.
44 is connected. The resonance frequency f1 of the LC series circuit 44
Is expressed by the equation (1), signals of three kinds of frequencies of fr, fr-f1 and fr + f1 oscillate in the super-regeneration detection circuit 40. 4 and 5 for this purpose.
The carrier frequency of the modulated wave that can be detected is also fr
And f1. It also becomes suitable for reception in communications using a wide band.

FIG. 6 is a circuit diagram of a superheterodyne receiving apparatus showing another embodiment. In this figure, the same components as those shown in FIG.

In the receiving apparatus shown in FIG. 6, an RF oscillation circuit 41A included in the super-regeneration detection circuit 40A oscillates a signal having a frequency fi different from the carrier frequency fr of the modulated wave.

The modulated wave ASK-modulated by the carrier having the frequency fr is amplified by the high-frequency amplifier circuit 30 and
Given to.

The superheterodyne receiver includes a local oscillation circuit 70 that oscillates and outputs a high-frequency signal of high-frequency fl. The high-frequency signal output from local oscillation circuit 70 is provided to mixer 60.

In the mixer 60, an intermediate signal having an intermediate frequency fi which is the difference between the frequency fr of the modulated wave output from the high frequency amplifier circuit 30 and the frequency fl of the high frequency signal output from the local oscillator circuit 70 is generated. It is provided to the super-regeneration detection circuit 40A. Thereafter, detection is performed in the super-regeneration detection circuit 40A, and differential amplification is performed in the differential amplifier circuit 50, as in the circuit shown in FIG.

In the circuit shown in FIG. 5, the frequency f of the modulated wave
Even if r and the frequency of the RF oscillation circuit 41A included in the super-regeneration detection circuit 40A are not the same, the frequency fr of the modulated wave becomes f
If it is almost equal to any one of i, fi-f1 and fi + f1, detection in the super-regeneration detection circuit 40A becomes possible.

FIG. 7 is a block diagram in which the super regenerative detection circuit shown in FIG. 1 is applied to a spread spectrum communication system.

The spread spectrum communication system includes a spread spectrum transmission system 80 and a spread spectrum reception system 90.

The spread spectrum transmission system 80 includes a spread spectrum transmission apparatus 81 having an information modulation circuit 82 for performing primary modulation and a spread modulation circuit 83 for performing secondary modulation. The modulated signal is provided to information modulation circuit 82 included in spread spectrum transmitting apparatus 81. In the information modulation circuit 82, information modulation (for example, angle modulation such as frequency modulation and phase modulation) is performed using the modulation signal. The modulated wave output from the information modulation circuit 82 is provided to the spread modulation circuit 83. Spread spectrum transmitter 81
Includes a spreading code generator 84,
The spreading code generated at 84 is provided to the spreading modulation circuit 83. The spread modulation circuit 83 performs spread modulation, and the modulated wave is output from the spread spectrum transmitter 81.

The modulated wave output from spread spectrum transmitting apparatus 81 is applied to ASK modulation circuit 85, where ASK modulation is performed. The modulated wave subjected to ASK modulation is transmitted from the transmission antenna 86.

The modulated wave transmitted from the transmitting antenna 86 and subjected to ASK modulation is received by the receiving antenna 91 and given to the super-regeneration detection circuit 92. Detection is performed in the super-regeneration detection circuit 92 as described above. The signal detected by the super regenerative detection circuit 92 is input to a spread spectrum receiver 96.

The spread spectrum receiver 96 includes a spread demodulation circuit 93, a spread code generator 94, and an information demodulation circuit 95.

The spreading code generated in the extension code generator 94 is given to the spreading demodulation circuit 93. The signal detected by the super-reproduction detection circuit 92 is also supplied to the spread demodulation circuit 93. The spread demodulation circuit 93 performs spread demodulation of the detection signal using a spread code. The detection signal spread and demodulated in the spread demodulation circuit 93 is supplied to the information demodulation circuit 95 and demodulated. The output signal of the information demodulation circuit 95 becomes the output signal of the spread spectrum receiver 96, and a demodulated signal is obtained.

FIGS. 8 to 10 show examples of using the super-regenerative detection circuit shown in FIG. FIG. 8 is a remote control system for a toy car, FIG. 9 is a block diagram showing an electrical configuration of a remote control device constituting the remote control system, and FIG. 10 is a diagram showing a remote control system. It is a block diagram which shows the electric constitution of a toy car.

In the remote control system, the running of the toy car 110 is controlled by the remote control device 100.

Referring to FIG. 9, remote control device 100 includes CPU 105. The CPU 105 is externally provided with a memory 106 for storing an operation program and other necessary data.

The remote control device 100 has control switches 101 and 102 for controlling the running of the automobile 110.
, 103 and 104 are provided. Control switch 101
Is operated when the vehicle 110 is moved forward. The steering switch 102 is operated when the vehicle 110 is moved backward. The control switch 103 is a car 110
Is to be steered when turning right. The steering switch 104 is steered when the vehicle 110 is turned left. Signals representing the settings of these switches 101 to 104 are given to CPU 105.

In the CPU 105, the switches 101 to 104
A travel control code for controlling the travel of the automobile 110 is generated based on the signal input from the control unit 100. The running control code is modulated in the modulation circuit 107. The modulated running control code is transmitted from transmitting antenna 108.

Referring to FIG. 10, the modulated running control code transmitted from transmitting antenna 108 of remote control device 100 is received by receiving antenna 111 and applied to super-regeneration detection circuit 112. Detection is performed in the super-regeneration detection circuit 112 as described above.

The CPU 114 has a memory 115 for storing an operation program, the contents of running control codes, and other data.
Is attached externally. Referring to the data stored in the memory 115, the CPU 114 analyzes the content of the running control code generated in the remote control device 100 from the input detection signal. The motor control circuit 116 and the steering wheel control circuit 117 are controlled by the CPU 114 on the basis of the analysis result, and the running of the automobile 110 is controlled.

FIGS. 11 to 13 show other examples of use of the super-regenerative detection circuit shown in FIG. 11 shows a garage shutter opening / closing system, FIG. 12 is a block diagram showing an electric configuration of a remote control device constituting the garage shutter opening / closing system, and FIG. 13 shows an electric configuration of a garage constituting the garage shutter opening / closing system. FIG.

The garage shutter opening / closing system controls the opening / closing of the shutter 137 of the garage 130 by the remote control device 120.

Referring to FIG. 12, remote control device 120 includes CPU 123. The CPU 123 has an operation program and an I indicating that the user is a valid user.
A memory 124 for storing a D code and other necessary data is externally provided.

The remote control device 120 has switches 121 and 12 for setting the opening and closing of the shutter 137.
2 are provided. The switch 121 is set when the shutter 137 is opened, and the switch 122 is set when the shutter 137 is closed. Signals representing the settings of these switches 121 and 122 are sent to the CPU 12
Given to 3.

In the CPU 123, the switches 121 and
An opening / closing control code for controlling the opening / closing of the shutter 137 is generated based on the signal input from the controller 122. The ID code is read from the memory 124. The opening / closing control code and the ID code are modulated in the modulation circuit 125 and transmitted from the transmission antenna 126.

Referring to FIG. 13, the modulated opening / closing control code and ID code transmitted from transmission antenna 126 of remote control device 120 are received by reception antenna 131 and provided to super-regeneration detection circuit 132. Super regeneration detection circuit 13
2, detection is performed as described above.

The CPU 134 is externally provided with a memory 135 for storing an operation program, the contents of an opening / closing control code, an ID code, and other data. Referring to the data stored in the memory 135, the CPU 134 analyzes the contents of the open / close control code and the ID code generated in the remote control device 120 from the input detection signal. If it is determined that the person who attempts to open and close the shutter 137 is a valid user based on the analyzed ID code, the motor control circuit 136 is controlled based on the analysis result of the analyzed opening and closing control code. , Motor (not shown)
Thereby, the shutter 137 is opened and closed.

A door opening / closing system can be constructed in the same manner as the garage shutter opening / closing system. When constructing a door opening / closing system, the motor will control the door cloakroom and control the opening / closing of the door instead of the motor constituting the shutter 137.

FIGS. 14 to 16 show still another application example of the receiving apparatus shown in FIG.

FIG. 14 shows a wireless engine starter.
FIG. 15 is a schematic diagram of a system, FIG. 15 is a block diagram showing an electric configuration of a remote control device constituting the system, and FIG. 16 is a block diagram showing a part of a configuration of an automobile constituting the system.

The wireless engine starter system is connected to the vehicle 15 by the remote control 140.
Controls the start and stop of the 0 engine.

Referring to FIG. 15, remote control device 140 includes CPU 143. The CPU 143 is externally provided with a memory 144 that stores an operation program, an ID code indicating that the user is a valid user, and other data.

The remote control device 140 is provided with switches 141 and 142 for controlling the start and stop of the engine of the automobile 150. The switch 141 is set when the engine is started, and the switch 142 is set when the engine is stopped. Signals representing the settings of these switches 141 and 142 are applied to CPU 143.

In the CPU 143, the switches 141 and 14
A start / stop control code for controlling the start and stop of the engine is generated based on the signal input from (2). The ID code is read from the memory 144. The start / stop control code and the ID code are modulated in the modulation circuit 145 and transmitted from the transmission antenna 146.

Referring to FIG. 16, the modulated start / stop control signal and ID code transmitted from transmission antenna 146 of remote control device 140 are received by reception antenna 151 and applied to super-regeneration detection circuit 152. Detection is performed in the super-regeneration detection circuit 152 as described above.

The CPU 154 is externally provided with a memory 155 for storing operation programs, contents of start / stop control codes, ID codes and other data. Memory 15
5 by referring to the data stored in
At 150, the contents of the start / stop control code and the contents of the ID code generated are analyzed. Analyzed I
If it is determined that the person who tries to start or stop the engine of the automobile 150 based on the D code is a valid user, the engine control circuit 156 operates based on the analysis result of the analyzed start / stop control code. Controlled. The cell motor 15 is controlled by the engine control circuit 156.
7, the fuel supply device 158, and the ignition device 159 are controlled, and the start or stop of the engine of the automobile 150 is controlled.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a receiving apparatus for a modulated wave signal.

FIG. 2 shows oscillation signals of an RF oscillation circuit and a quenching oscillation circuit.

FIG. 3 is a waveform diagram of a signal flowing through the circuit shown in FIG. 1;

FIG. 4 illustrates a frequency band of a carrier of a modulated signal that can be detected by the receiving apparatus illustrated in FIG. 1;

FIG. 5 shows a frequency band of a carrier of a modulated signal that can be detected by the receiving apparatus shown in FIG. 1;

FIG. 6 is a circuit diagram of a receiving apparatus for a modulated signal according to another embodiment.

FIG. 7 is a block diagram showing an electrical configuration of the spread spectrum communication system.

[Figure 8] Remote control of toy car
1 shows a configuration of a system.

FIG. 9 is a block diagram showing an electrical configuration of the remote control device.

FIG. 10 is a block diagram showing an electric configuration of a toy automobile.

FIG. 11 shows a configuration of a garage shutter opening / closing system.

FIG. 12 is a block diagram showing an electrical configuration of the remote control device.

FIG. 13 is a block diagram showing an electrical configuration of a garage.

FIG. 14 shows a start / stop control system for an automobile engine.

FIG. 15 is a block diagram showing an electrical configuration of the remote control device.

FIG. 16 is a block diagram showing an electrical configuration related to start / stop control of the engine of the automobile.

[Explanation of symbols]

 10 Receiving antenna 40, 40A Super regenerative detection circuit 41, 41A RF oscillation circuit 42 Quenching oscillation circuit 43 LPF 44 LC series circuit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI F02D 29/02 F02D 29/02 H 45/00 358 45/00 358A F02N 11/08 F02N 11/08 U H04B 1/06 H04B 1 / 06 Z 1/38 1/38

Claims (8)

[Claims] An oscillation circuit for oscillating a signal having the same frequency as the carrier frequency of a modulated wave signal to be detected and outputting the signal from an output terminal, and a quench for intermittently oscillating the oscillation circuit according to the modulated wave signal. Under the control of oscillation by the quenching oscillation circuit and the quenching oscillation circuit, a row signal for detecting the modulated wave signal and outputting a detection signal by inputting an oscillation signal output from the oscillation circuit and passing a low frequency signal component. A super-regenerative detection device comprising a pass filter and an LC series circuit connected to the output terminal of the oscillation circuit. 2. The super-regenerative detection device according to claim 1, further comprising a receiver that receives the modulated wave signal and supplies the received modulated wave signal to the oscillation circuit. 3. A receiver for receiving a modulated wave signal and outputting the received modulated wave signal, a local oscillation circuit for outputting a high-frequency signal having a frequency different from the carrier frequency of the modulated wave signal, and the receiving device Modulated signal output from the modulator and the high-frequency signal output from the local oscillator circuit, and an intermediate signal having an intermediate frequency that is the difference between the carrier frequency of the modulated signal and the frequency of the high-frequency signal 2. The super-regenerative detection device according to claim 1, further comprising: a mixer that outputs a signal to the oscillation circuit. 4. A garage / shutter opening / closing system comprising a transmitting device, a receiving device, and an opening / closing mechanism for opening / closing a garage shutter. A modulation circuit that modulates an opening / closing command signal indicating the opened / closed command and an ID signal indicating that the user is a valid user who can open and close the shutter, and outputs a modulated wave signal;
And a transmission circuit for transmitting a modulated wave signal output from the modulation circuit, wherein the receiving device receives the modulated wave signal transmitted from the super-regenerative detection device according to claim 1 and the transmission circuit. Analyzing the command content of the open / close command signal and the content of the ID signal based on a detection circuit output from a receiving circuit provided to the super-regenerative detection device and a low-pass filter included in the super-regenerative detection device. Signal analyzing means, and control means for controlling the opening / closing mechanism so as to perform an opening / closing operation according to the command content of the opening / closing command signal when the ID signal analyzed by the signal analyzing means is valid. Garage shutter opening and closing system with 5. A door opening / closing system comprising a transmitting device, a receiving device, and an opening / closing mechanism for opening / closing a door, wherein the transmitting device has a command switch for receiving the door opening / closing command.
A modulation circuit that modulates an opening / closing command signal indicating an opening / closing command received by the command switch and an ID signal indicating that the user is a valid user who can open and close the door, and outputs a modulated wave signal; 2. A super-regenerative detection device according to claim 1, further comprising a transmitting circuit for transmitting the modulated wave signal to be output, wherein the receiving device receives the modulated wave signal transmitted from the transmitting circuit, A receiving circuit provided to the apparatus, a signal analyzing means for analyzing the command content of the switching command signal and the content of the ID signal based on a detection signal outputted from a low pass filter included in the super regenerative detection device, and When the ID signal analyzed by the signal analysis means is valid, the opening / closing operation according to the instruction content of the opening / closing instruction signal is performed. Control means for controlling the opening and closing mechanism door system with a. 6. An engine control system comprising a transmission device, a reception device, and an engine control device for controlling start and stop of an engine of an automobile, wherein the transmission device has a command switch for receiving the start and stop commands of the engine. A modulation circuit that modulates a start / stop command signal indicating a start / stop command received by the command switch and an ID signal indicating that the user is a valid user who can start and stop the engine and outputs a modulated wave signal. And a transmission circuit for transmitting a modulated wave signal output from the modulation circuit, wherein the receiving device receives the modulated wave signal transmitted from the super-regeneration detection device according to claim 1 and the transmission circuit. And a receiving circuit to be provided to the super-regenerative detection device, which is included in the super-regenerative detection device. Signal analysis means for analyzing the contents of the start / stop command signal and the contents of the ID signal based on the detection signal output from the low pass filter, and the ID signal analyzed by the signal analysis means An engine control system comprising: control means for controlling the engine control device so as to perform the control operation of the engine in accordance with the contents of the start / stop command signal when is valid. 7. A model vehicle traveling control system comprising a transmitting device, a receiving device, and a traveling control mechanism for controlling traveling of a model vehicle, wherein the transmitting device receives a command switch for receiving a traveling command of the model vehicle, and the command switch. A modulation circuit for modulating a travel command signal representing a travel command accepted by the controller and an ID signal representing that the user is a valid user who can control the travel of the model car and outputting a modulated wave signal, and an output from the modulation circuit. A transmission circuit for transmitting the modulated wave signal, wherein the receiving device receives the modulated wave signal transmitted from the transmission circuit, and receives the modulated wave signal from the transmission circuit. A running circuit based on a detection signal output from a low-pass filter included in the super-regenerative detection device. Signal analysis means for analyzing the contents of the command and the ID signal, and when the ID signal analyzed by the signal analysis means is legitimate, performs a traveling operation according to the instruction content of the traveling instruction signal. Control system for controlling the running control mechanism as described above. 8. A super-regenerative detection device according to claim 1, wherein said modulated wave signal is subjected to spread spectrum modulation, and said oscillation circuit inputs said modulated wave signal subjected to said spread spectrum modulation. Wherein the low-pass filter outputs the detection signal subjected to the spread-spectrum modulation. The low-pass filter outputs the detection signal output from the low-pass filter and subjected to the spread-spectrum modulation. A spread spectrum receiving system further comprising a circuit for performing spread demodulation.